Journal
RSC ADVANCES
Volume 5, Issue 37, Pages 29491-29496Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra01749a
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Funding
- National Nature Science Foundation of China [21102004]
- Natural Science Foundation of the Anhui Higher Education Institutions of China [KJ2011A146]
- SRF for ROCS
- National Training Programs of Innovation and Entrepreneurship for Undergraduates [201410370040]
- Training Programs of Innovation and Entrepreneurship of Anhui Province for Undergraduates [AH201410370040]
- Special and Excellent Research Fund of Anhui Normal University
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Three gold complexes with pyridine-based SNS type ligands, 2,6-bis(1-methylimidazole-2-thione) pyridine (Bmtp), 2,6-bis(1-ethylimidazole-2-thione) pyridine (Betp) and 2,6-bis(1-isopropylimidazole-2-thione)pyridine (Bptp) have been synthesized and characterized. Reactions of HAuCl4 center dot H2O with three pyridine-based SNS ligands result in the formation of the complexes [(L)AuCl2] Cl (L = Bmtp (1); L = Betp (2) and L = Bptp (3)). All compounds are investigated by elemental analysis, NMR, MS and UV-Vis as well as IR spectral analysis. The molecular structure of 3 has been confirmed by X-ray crystallography. Moreover, all gold complexes are efficient homogeneous catalysts and catalyze the reduction of 4-nitrophenol (4-NP) to 4-nitroaniline (4-AP) in the presence of NaBH4 reducing agent in water. And complex 3 exhibits an exceptionally high turn over frequency (TOF) of 1.20 min(-1) for the reduction of 4-NP.
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